Service manual

S0740 800 179/E071123/P64
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ct33_01
DESCRIPTION OF OPERATION
This description describes the function of circuit boards and other components in the power
source. It is divided into sections, numbered to correspond to the circuit board numbers and
divisions into function blocks.
1 MMC module
The MMC module consists of an operator ’s control panel and a display board.
The control panel is used for setting and displaying welding data. The welding data are
stored by the control board of the power source.
The control panels are described in separate instruction and service manuals.
TA33 AC/DC intended for MMA -- , AC TIG-- and DC TIG welding without pulsing.
TA34 AC/DC intended for MMA -- , AC TIG -- and DC TIG welding with pulsing.
S TA33 AC/DC S TA34 AC/DC
Pushbuttons are used for parameter selection and a knob for parameter settings, current, time etc.